S-91390A143 M8 x 16 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with cup point design that bites into mating surfaces for permanent, vibration-resistant fastening
• Exceptional strength and durability from alloy steel construction with Rockwell C45 hardness for heavy-duty industrial applications
• Precise metric threading with Class 5g6g tolerance ensuring reliable fit and consistent performance in demanding environments
• Easy installation and removal with 4mm hex drive providing secure tool engagement without protruding head design
• Industry-standard compliance meeting DIN 916/ISO 4029 specifications for guaranteed dimensional accuracy and interchangeability
• Environmental regulation compliance with RoHS 3 and REACH certifications for safe use in regulated industries
• Optimized coarse thread design (M8 x 1.25mm) enabling faster installation and superior resistance to loosening under vibration

Professional Applications & Engineering Value

This M8 set screw delivers critical engineering solutions for industrial applications requiring permanent component positioning. The alloy steel construction with Rockwell C45 hardness provides exceptional resistance to wear and deformation, making it ideal for high-stress assemblies in machinery, automotive systems, and precision equipment. The cup point tip creates concentrated pressure that digs into shaft surfaces, preventing rotational slippage even under continuous vibration - a common failure point in rotating assemblies. With right-hand coarse threading and 4mm hex drive, installation is both efficient and secure, while the headless design maintains clean profiles in space-constrained applications. These metric set screws are engineered to solve alignment and positioning challenges where reliability cannot be compromised.

Specification Summary & Compliance

This set screw maintains precise Class 5g6g thread fit tolerance per metric standards, ensuring consistent engagement and load distribution. Manufacturing conforms to DIN 916 ISO 4029 specifications for dimensional accuracy and mechanical properties. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substance restrictions. The combination of M8 x 1.25mm coarse threading and 16mm length provides standardized sizing for reliable interchangeability across industrial applications.